"Aides" is a maimai original song created for the CiRCLE PLUS edition of maimai DX, released on March 19, 2026. The track is a collaboration between composer tokiwa (responsible for composition, arrangement, and lyrics) and vocalist むﾄ (Muto), with background movie production handled by あげは (Ageha) and みすみ (Misumi). At a driving 200 BPM, the song blends dark, atmospheric instrumentation with a melodic vocal line, delivering lyrics that dwell on loneliness, curses, endless nightmares, and the pain of memories that refuse to fade. The song's title, written in Latin script, appears in the lyrics as "Aides" (二人きりのAides, "the two of us alone, Aides"), suggesting a proper name or a reference to the Greek underworld (Hades, ᾍδης), fitting the track's purgatorial imagery. Its release flavor text reinforces this mood: a first-person narrator at the bottom of the sea, drifting in a deep sleep, uncertain whose memories surface, and choosing to close their eyes and forget rather than remember. In-game, "Aides" is a locked song in the Tricolo Area 2 (トリコロちほー2) on Japanese-region machines, requiring a cumulative travel distance of 150 km in that area to unlock. The Master chart, designed by Luxizhel at level 13+ with a difficulty constant of 13.8, sits near the upper end of its tier and features 122 Slide notes, a heavy concentration that plays to Luxizhel's signature style. The Expert chart, designed by サファ太 (Safata) at level 10+ (constant 10.6), balances Break and Slide patterns into a dense but approachable 572-note layout.